Insulator-jack for replacing insulator disks
US4760640A · kind A · utility
Inventor
Key dates
| Filing date | Oct 2, 1986 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Oct 2, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53274
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An insulator-jack for replacing damaged electrical insulators in a string of insulators comprises a pair of threaded rods disposed in substantially parallel relation to one another, a pair of coplanar spaced-apart insulator clamping collars, each being connected to opposite ends of the rods by a pair of lateral arms, wherein one of the insulator clamping collars is movably positionable along the threaded rods by a pair of ratchet members to selectively vary the distance between the two clamping collars. The non-movable clamping collar is provided with an upwardly and inwardly projecting safety tongue which engages the connection between the insulator clamped within the collar and the next-above insulator in the string, and is also provided with inward projections along the internal periphery to securely engage the insulator and thereby prevents slippage of the insulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.